document.write( "Question 1100538: Gia is 4 years younger than her sister Joy. The sum of their ages is 74. How old is Joy? \n" ); document.write( "
Algebra.Com's Answer #715039 by Boreal(15235)\"\" \"About 
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Joy is x
\n" ); document.write( "Gia is x-4
\n" ); document.write( "add to 74
\n" ); document.write( "x+x-4=74
\n" ); document.write( "2x-4=74
\n" ); document.write( "2x=78
\n" ); document.write( "x=39
\n" ); document.write( "Joy is 39, Gia 35, and that adds to 74.
\n" ); document.write( "Joy is 39 ANSWER
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